Dear Sirs'
Re the Macrovision copy-protection system used to stop DVDs being copied to
VHS:
===========BEGIN QUOTE=======================
> That's macrovison man. A totally analogue copy protection scheme
> that's been
> around since the late 80s at least, not just on DVD, but VHS as
> well. It is
> a bunch of gobly gook that resided in the vertical blanking buffer on old
> VHS tapes that screws up the signal for copies, but not laserdisc (since
> that part of the signal is used for time info). In DVDs it is actually
> generated by the hardware (I assume) since it's possible to turn
> it on and
> off.
=================END QUOTE====================
Can someone author a DVD such as a system test and tune-up DVD and make sure
that Macrovision is not implemented by DVD players? This is because the
Macrovision system has been known to cause some TVs to play up or improper
results when tuning-up a DVD home-theatre system. As well, recording to VHS
could be intended for example if the viewing device is a VHS player hooked
up to a video projector.
Also, there are some software packages which allow people to author DVD
content for copying to a DLT tape which is used for volume replication; or
burning to a DVD-R for "one-off" DVDs. Has anyone ever dabbled with some of
these programs?
WIIth regards,
Simon Mackay
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